JPH0685595U - Ultrasonic transducer - Google Patents

Abstract

(57) [Summary] [Purpose] Reduce the number of signal transmission cables,
An ultrasonic wave transmitter / receiver that achieves cost reduction and compactness. An ultrasonic wave transmitter / receiver unit having a transducer unit for transmitting an ultrasonic wave and receiving a reflected wave thereof, and a beam synthesizing circuit unit for controlling an ultrasonic beam. 1A and the beam synthesizing circuit unit 2 are arranged on at least one same printed circuit board 3 and housed in the same casing inside 4, 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is an ultrasonic wave transmission / reception unit having a transducer unit for transmitting ultrasonic waves and receiving a reflected wave from a school of fish in a sonar, and a beam synthesizing circuit unit for controlling an ultrasonic beam. Regarding vessels.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, an ultrasonic wave transmitter / receiver of this type is known as shown in FIG. In FIG. 2, the wave transmitter / receiver unit 1A is composed of the vibrator 1 immersed in the oil 9 filled in the dome 4.

On the other hand, the beam synthesizing circuit unit 2 for controlling the ultrasonic beam is connected to the transducer unit 1 A by a signal transmission cable 11 housed in the sliding shaft 7.

[0004]

[Problems to be solved by the device]

 As described above, in the conventional ultrasonic transmitter / receiver, the transmitter / receiver unit 1A and the beam synthesizing circuit unit 2 are separately housed in different casings, so that many signals are transmitted between them. The signal transmission cable 11 for transmission is required, which increases the number of wiring steps and causes a cost increase, and has a disadvantage that it requires a lot of space.

An object of the present invention is to provide an ultrasonic wave transmitter / receiver that solves the problems of the prior art.

[0006]

[Means for Solving the Problems]

 SUMMARY OF THE INVENTION In order to solve the problems of the prior art, the present invention provides a transmitter / receiver unit that contains a transducer that transmits ultrasonic waves and receives reflected waves, and a beam combining circuit unit that controls ultrasonic beams. And are arranged on at least one same printed circuit board, and are housed in the same housing.

[0007]

[Action]

 Since the transducer unit containing the ultrasonic transducer and the beam combining circuit unit that controls the ultrasonic beam are combined on a single PC board, the signal transmission cable of the conventional example can be used. It is possible to significantly reduce the number of wirings, thereby reducing the wiring man-hours, suppressing the cost increase factor, and achieving the compactness of the device without requiring a large space.

[0008]

【Example】

 Hereinafter, an embodiment of the present invention will be described in detail with reference to FIG. In FIG. 1, members that are the same as or equivalent to the members described in FIG. 2 showing the conventional example are given the same reference numerals, and description thereof will be omitted.

2 is different from the conventional example shown in FIG. 2 in that the inside of the dome 4 is a transducer unit having a vibrator for transmitting ultrasonic waves and receiving reflected waves thereof, and a beam combining circuit for controlling ultrasonic waves. The path portion 2 is disposed on at least one same printed circuit board (a plurality of printed circuit boards in FIG. 1). The insulating oil 9 filled between the dome 4 and the vibrator 1 is for not attenuating ultrasonic waves.

A single oscillator 1 and a single beam combining circuit 2 are arranged on one PC board (printed circuit board) 3, respectively. A plurality of such PC boards 3, four domes and a case 5 are arranged in the radial direction of the entire housing. The fixing of the PC board 3 is performed by inserting the PC board 3 into slits provided in the connection holder 6, respectively. The electrical connection between the vibrator 1 and the beam synthesizing circuit 2 is made by the print wiring provided on the PC board 3.

Since the filler (not shown) is provided in the slit portion of the connection holder 6, the oil 9 does not move upward, and the oil 9 is prevented from entering the beam combining circuit 2. Has become. The dome 4 and the case 5 can be divided into upper and lower parts. If the hexagonal bolt 10 that connects the dome 4 and the case 5 is removed, the dome 4 and the case 5 can be separated and the PC board 3 can be taken out from the case 5, which is convenient for maintenance and inspection. Is.

Since the transducer 1 and the beam synthesizing circuit 2 are integrally arranged in this manner, the number of signal transmission cables 11 as in the conventional example is only four, which is the same as in the conventional example. It can be reduced to 1/5.

[0013]

[Effect of device]

 As described above, according to the present invention, the transducer unit containing the transducer and the beam synthesizing circuit unit controlling the ultrasonic beam are integrally arranged on a single PC board. It is possible to significantly reduce the number of signal transmission cables as in the conventional example, thereby reducing the wiring man-hours, suppressing the cost increase factor, and compacting the device without requiring a lot of space. Can be achieved.

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional view showing an embodiment of the present invention.

FIG. 2 is a schematic vertical sectional view showing an ultrasonic wave transmitter / receiver in a conventional example.

[Explanation of symbols]

 1 Vibrator 2 Beam Compositing Circuit 3 PC Board 4 Dome 5 Case 6 Connection Holder 7 Sliding Axis 10 Hexagonal Bolt 11 Signal Transmission Cable

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshito Suzuki Shimorenjaku 5-1-1 1-1 Mitaka City, Tokyo Japan Radio Co., Ltd.

Claims (2)

[Scope of utility model registration request] 1. An ultrasonic wave transmitter / receiver having a transducer unit for transmitting an ultrasonic wave and receiving a reflected wave thereof, and a beam synthesizing circuit unit for controlling an ultrasonic beam.
An ultrasonic wave transmitter / receiver, wherein the wave transmitter / receiver section and the beam synthesizing circuit section are arranged on at least one same printed circuit board and housed in the same housing. 2. The ultrasonic transducer according to claim 1, wherein a plurality of the printed circuit boards are arranged in a radial direction of a housing.